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Variation & Human Heredity

Total questions: 10

Worksheet time: 6mins

Name
Class
Date
1.

The total number of alleles present in a population of a particular species of organism at a given time is

a)

gene pool

b)

variable trait

c)

karyotype

d)

autosome

2.

A change in the gene pool is

a)

Evolution

b)

Genetics

c)

Heredity

d)

Development

3.

The number of times a particular allele appears in a gene pool is known as the

a)

allele population

b)

allele relative percentage

c)

allele frequency

d)

allele evolution

4.

A characteristic controlled by only one section of only one chromosome is a(an)

a)

single-gene trait

b)

allele

c)

gene

d)

polygenic trait

5.

A characteristic controlled by more than one section of one or more chromosomes is a(an)

a)

single-gene trait

b)

allele

c)

gene

d)

polygenic trait

6.

A photograph or picture of chromosomes grouped in ordered pairs is a ______________

a)

Pedigree

b)

Punnett Square

c)

Venn Diagram

d)

Karyotype

7.
Which sex chromosomes would indicate a typical human male?
a)
XX
b)
X
c)
XY
d)
XXY
8.

Chromosomes that contain genes that are not related to determining a person's gender are

a)

autosomes.

b)

sex chromosomes.

c)

haploid chromosomes.

d)

diploid chromosomes.

9.

Chromosomes that determine whether an organism is biologically male or female are called

a)

autotrophs

b)

autosomes

c)

sex chromosomes

d)

sex-linked traits

10.

A chart that displays genetic traits or disorders throughout a family lineage is a

a)

Punnett square

b)

Pedigree

c)

Karyotype chart

d)

Family tree